RH

Richard C. Hartwig

WC W.R. Grace & Co.-Conn.: 2 patents #9 of 94Top 10%
📍 Laurel, MD: #1 of 19 inventorsTop 6%
🗺 Maryland: #78 of 1,164 inventorsTop 7%
Overall (1989): #17,733 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4855185 Polyurethane coatings for bridge deckings and the like Cung Vu, Susan P. Buxbaum, Norman Blank 1989-08-08
4804734 Polyurethane composition consisting essentially of a polyether diol, a polyether triol, glycerol, and a polyisocyanate Cung Vu 1989-02-14